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Terminologies in Genetic Inheritance

Total questions: 24

Worksheet time: 12mins

Name
Class
Date
1.

Alternative form of a gene.

a)

Allele

b)

Genotype

c)

Phenotype

d)

Gene

2.

Genetic makeup of a gene. (Eg: Tt, TT, tt)

a)

Allele

b)

Genotype

c)

Phenotype

d)

Gene

3.

Observable trait of a gene. (Eg: Tall, Short, Blue eyes, Black hair)

a)

Allele

b)

Genotype

c)

Phenotype

d)

Gene

4.

Basic unit of heredity, control one trait or characteristic.

a)

Allele

b)

Gene

c)

Genotype

d)

Phenotyy

5.

Long thread of DNA, contains many genes.

a)

Chromosome

b)

Nucleus

c)

Cell

d)

Protein

6.

A genotype contains two dominant alleles. (Eg: BB, TT, HH)

a)

Homozygous dominant

b)

Homozygous recessive

c)

Heterozygous

d)

Homozygous

7.

A genotype contains two recessive alleles. (Eg: bb, tt, hh)

a)

Homozygous dominant

b)

Homozygous recessive

c)

Heterozygous

d)

Homozygous

8.

A genotype contains dominant and recessive alleles. (Eg: Bb, Tt, Hh)

a)

Homozygous dominant

b)

Homozygous recessive

c)

Heterozygous

d)

Homozygous

9.

A genotype contains identical alleles. (Eg: bb, BB, tt, HH)

a)

Homozygous dominant

b)

Homozygous recessive

c)

Heterozygous

d)

Homozygous

10.

This allele able to express the phenotype in homozygous and heterozygous condition.

a)

Dominant allele

b)

Recessive allele

11.

This allele able to express the phenotype in homozygous condition only, and hidden in heterozygous condition.

a)

Dominant allele

b)

Recessive allele

12.

1 gene consist a pair of allele.

a)

True

b)

False

13.

1 gene control 1 characteristic / trait.

a)

True

b)

False

14.

Dominant allele control dominant phenotype.

a)

True

b)

False

15.

Recessive allele control dominant phenotype.

a)

True

b)

False

16.

A purebred red flower has ___ genotype. Red flower is dominant trait.

a)

Homozygous dominant, RR

b)

Heterozygous, Rr

c)

Homozygous recessive, rr

17.

A purebred wrinkled seed has ___ genotype. (W - smooth, w - wrinkled)

a)

Homozygous dominant, WW

b)

Heterozygous, Ww

c)

Homozygous recessive, ww

18.

What is the genotype of a tall tree with at least one recessive allele. Tall phenotype is dominant trait.

a)

Homozygous dominant

b)

Heterozygous

c)

Homozygous recessive

19.

Allele is ....

a)

Alternative form of a gene.

b)

Basic unit of heredity.

c)

Genetic makeup of a gene.

d)

Observable trait of a gene.

20.

Gene is ....

a)

Alternative form of a gene.

b)

Basic unit of heredity.

c)

Genetic makeup of a gene.

d)

Observable trait of a gene.

21.

Genotype is ....

a)

Alternative form of a gene.

b)

Basic unit of heredity.

c)

Genetic makeup of a gene.

d)

Observable trait of a gene.

22.

Phenotype is ....

a)

Alternative form of a gene.

b)

Basic unit of heredity.

c)

Genetic makeup of a gene.

d)

Observable trait of a gene.

23.

Father of Genetic Inheritance.

a)

Gregor Mendel

b)

Nelson Mandela

c)

Isaac Newton

d)

Bill Gates

24.

Purebred organism has identical alleles. (Eg: BB, tt, bb, HH)

a)

True

b)

False